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Maintenance

17

Cutting Blade

To assure a superior quality of cut, keep the blade(s)
sharp. For convenient sharpening and replacement,
you may want to have an extra blade(s).

POTENTIAL HAZARD

A blade that is worn or damaged could
break apart and pieces could be thrown at
bystanders or at you as you use the mower.

WHAT CAN HAPPEN

Pieces of blade that may be thrown could
seriously injure or kill you or bystanders.

HOW TO AVOID THE HAZARD

Periodically inspect the blade for wear and
damage. Immediately install a new blade if
it is worn or damaged.

Inspecting the Blade(s)

1.

Remove the mower; refer to Removing the
Mower, page 10.

2.

Inspect the cutting edges (Fig. 19). If the edges
are not sharp or have nicks, remove the blade(s)
and sharpen them; refer to Sharpening the
Blade(s), page 18.

3.

Inspect the blade(s), especially the curved area
(Fig. 19). If you notice any damage, wear, or a
slot forming in this area (Fig. 19), immediately
install a new blade.

m–151

1

2

3

Figure 19

1.

Cutting edge

2.

Curved area

3.

Wear/slot forming

Removing the Blade

1.

Remove the mower; refer to Removing the
Mower, page 10.

2.

Carefully tip the mower over.

3.

Remove the nut, flat washer, blade, and washer
(Fig. 20). A block of wood may be wedged
between the blade and the mower to lock the
blade when you are removing the bolt.

4.

Inspect all parts. If a defect or damage is noticed,
install new parts.

1

2

3

4

5

Figure 20

1.

Nut

2.

Flat washer

3.

Blade

4.

Washer

5.

Spindle

Summary of Contents for 78268

Page 1: ...contains information about your safety and the safety of others Also become familiar with the controls and their proper use before you operate the product FORM NO 3319 721GB Wheel Horse 48 Side Discharge Mower for Lawn Garden Tractors Model No 78268 7900001 Up ...

Page 2: ...o The warning system in this manual identifies potential hazards and has special safety messages that help you and others avoid personal injury even death DANGER WARNING and CAUTION are signal words used to identify the level of hazard However regardless of the hazard be extremely careful DANGER signals an extreme hazard that will cause serious injury or death if the recommended precautions are no...

Page 3: ...ving the Mower 10 Operation 11 Side Discharge 11 Operating the Power Take Off PTO 11 Attachment Lift Lever 12 Page Attachment Power Lift 12 Adjusting Dial A Height 13 Adjusting Anti Scalp Rollers 13 Adjusting Gage Wheels 14 Tips for Mowing Grass 15 Maintenance 16 Service Interval Chart 16 Cutting Blade 17 Greasing and Lubrication 19 Blade Drive Belt 19 Washing Underside of Mower 20 Storage 21 Trou...

Page 4: ... are easily visible to the operator and are located near any area of potential danger Replace any decal that is damaged or lost ON GRASS DEFLECTOR Part No 93 7317 ON MOWER REAR CENTER Part No 93 7325 ON GRASS DEFLECTOR Part No 93 7316 NEXT TO GAGE WHEELS Part No 93 7282 ...

Page 5: ...ic washer Rubber bushing Lock nut 3 8 1 1 1 1 2 1 1 Install grass deflector Rear link Washer Cotter pin 1 1 1 Install rear link Adjustable links Washer 1 2 13 mm Cotter pin 1 26 mm 2 2 2 Install front mount to mower Hairpin cotter large Washer 3 4 19 mm Hairpin cotter small Washer 1 2 13 mm 2 2 3 3 Install mower to tractor Operator s Manual 1 Read before operating ...

Page 6: ...e up to test that it snaps to the full down position POTENTIAL HAZARD Without the grass deflector discharge cover or complete grass catcher assembly mounted in place you and others are exposed to blade contact and thrown debris WHAT CAN HAPPEN Contact with rotating mower blade s and thrown debris will cause injury or death HOW TO AVOID THE HAZARD NEVER remove the grass deflector from the mower bec...

Page 7: ...and cotter pin Fig 2 1 3 2 4 mĆ2438 Figure 2 1 Rear link 2 Bracket 3 Washer 1 2 13 mm 4 Cotter pin 6 Place adjustable links on mower brackets and secure with 1 2 13 mm washers and cotter pins Fig 3 1 3 2 4 mĆ2437 2 1 3 4 Figure 3 1 Adjustable link 2 Bracket 3 Washer 1 2 13 mm 4 Cotter pin ...

Page 8: ...l the way and lower the attachment lift lever to the mounting position refer to Operation page 5 Place rear guide bushings first left side then right onto lift arms then slide deck left into position Secure with 3 4 19 mm washers and large hairpin cotters Fig 4 6 Attach rear link to attachment lift with 1 2 13 mm washer and small hairpin cotter Fig 4 m 2445 1 3 2 5 4 7 6 Figure 4 1 Lift arms 2 Was...

Page 9: ...Leveling page 8 and Front to Rear Blade Leveling page 9 10 Raise attachment lift lever all the way to the latched position and adjust mower height of cut and transport height adjustment refer to page 7 Transport Height Adjustment Transport height is set at the factory and should not need adjustment however if the belt covers contact the footrest in the raised position adjustment is required 1 Adju...

Page 10: ...de Fig 8 Measure between the outside cutting edges and the flat surface Fig 8 If both measurements are not within 3 16 5 mm an adjustment is required refer to steps 4 and 6 Front m 1078 1 2 3 3 2 Figure 8 1 Blades side to side 2 Outside cutting edges 3 Measure here 4 Loosen adjustment bolt on one side and rotate hanger bracket to raise or lower mower Fig 9 5 After adjusting tighten bolt and check ...

Page 11: ... the range and lower attachment lift 4 Carefully rotate blades so they are facing front and rear Fig 10 5 Measure between the tip of the front blade Fig 10 and the tip of the rear blade to the flat surface If the front blade tip is not 0 3 8 0 9 5 mm lower than the rear blade tip adjust front adjustment link Front m 1078 1 2 3 4 4 Figure 10 1 Blade front to rear 2 Measure front blade tip 3 Measure...

Page 12: ...ig 12 m 2430 2 3 2 1 Figure 12 1 Adjustable link 2 Front lift arm 3 Washer 1 2 13 mm 4 Hairpin cotter small 5 Remove small hairpin cotter and washer from rear link and remove from attachment lift Fig 13 6 Remove hairpin cotters and washers from rear lift arms Fig 13 7 Slide deck right off rear lift arms Fig 13 m 2445 1 3 2 5 4 7 6 Figure 13 1 Lift arms 2 Washer 3 4 19 mm 3 Hairpin cotter large 4 A...

Page 13: ...key to OFF Also remove the key and pull the wire off the spark plug s 1 The mower has a hinged grass deflector that disperses clippings to the side and down toward the turf Operating the Power Take Off PTO The power take off PTO engages and disengages power to the electric clutch While the ignition key is in the RUN or LIGHTS positions and the power take off PTO is engaged ON the PTO light in the ...

Page 14: ...ift lever forword to lower attachment m 1205 3 2 4 5 6 1 Figure 15 1 Lift lever 2 Button 3 Dial A Height 4 Indicator 5 High 6 Mounting position Attachment Power Lift The attachment power lift optional on some models Fig 16 is used to raise and lower attachments Raising Attachments 1 Turn key to the ON or RUN position Fig 16 2 Push the lift switch in the UP direction to raise the attachment lift Fi...

Page 15: ... the change high to low in attachment lift height as adjustment is made Adjusting Anti Scalp Rollers The anti scalp rollers guide the mower over uneven turf without scalping the lawn For most cutting conditions they should be located in the lower hole When cutting in 1 1 2 38 mm height of cut or lower move the anti scalp rollers to the upper hole position 1 Raise the attachment lift lever Refer to...

Page 16: ...ut raise the attachment lift lever Refer to Raising Attachments 2 Remove hairpin cotter and pin to change hole location Fig 18 3 Select a hole position so the gage wheel is 3 8 9 5 mm off the ground for the height of cut to be used Fig 18 4 Insert pin and secure with hairpin cotter 5 Repeat adjustment on other gage wheel m 1233 1 2 3 Figure 18 1 Wheel 2 Pin 3 Hair pin Cotter ...

Page 17: ...id summer mow less frequently If you cannot mow for an extended period first mow at a high cutting height then mow again 2 days later at a lower height setting Cutting Speed To improve cut quality use slower ground speed Avoid Cutting Too Low If the cutting width of the mower is wider than the mower you previously used raise the cutting height to ensure uneven turf is not cut too short Long Grass ...

Page 18: ...aces paint X Tires check pressure X X X POTENTIAL HAZARD If you leave the key in the ignition switch someone could start the engine WHAT CAN HAPPEN Accidental starting of the engine could seriously injure you or other bystanders HOW TO AVOID THE HAZARD Remove the key from the ignition switch and pull the wire off the spark plug before you do any maintenance Also push the wire aside so it does not ...

Page 19: ...he Mower page 10 2 Inspect the cutting edges Fig 19 If the edges are not sharp or have nicks remove the blade s and sharpen them refer to Sharpening the Blade s page 18 3 Inspect the blade s especially the curved area Fig 19 If you notice any damage wear or a slot forming in this area Fig 19 immediately install a new blade m 151 1 2 3 Figure 19 1 Cutting edge 2 Curved area 3 Wear slot forming Remo...

Page 20: ...the blade stays in a horizontal position the blade is balanced and can be used If the blade is not balanced file some metal off the back side of the blade Repeat this procedure until the blade is balanced 1 2 Figure 22 1 Blade 2 Balancer Installing the Blade s 1 Install the washer blade flat washer and the blade nut Fig 23 IMPORTANT The curved part of the blade must be pointing toward the inside o...

Page 21: ... to the fitting Pump grease into the fittings 4 Wipe up any excess grease Where to Add Grease 1 Lubricate the blade spindles idler pulley arm and gage wheel bearings Fig 24 1274b Figure 24 Blade Drive Belt Removing the Blade Drive Belt 1 Remove the mower refer to Removing the Mower page 10 2 Remove the pulley cover mounting screws and pulley covers from both blade pulleys Fig 25 3 Remove the belt ...

Page 22: ...utes 5 Disengage the blade power take off PTO and turn the ignition key to OFF to stop the engine Wait for all moving parts to stop 6 Turn the water off remove hose coupling from the washout fitting Note If the mower is not clean after one washing soak and let stand for 30 minutes Then repeat process again 7 Run mower again for one to three minutes to remove excess water 1 m 3439 2 3 Figure 26 1 W...

Page 23: ...battery 2 Wash the underside of the mower refer to Washing Underside of Mower page 20 3 Check the condition of the blade s refer to Cutting Blade page 17 4 Check the condition of the blade drive belt 5 Grease the mower deck refer to Greasing and Lubrication page 19 6 Check and tighten all bolts nuts and screws Repair or replace any part that is damaged or defective 7 Paint all scratched or bare me...

Page 24: ...ey 4 Tighten the appropriate pulley 5 Engine pulley is damaged 5 Contact Authorized Service Dealer Blade s does not rotate 1 Blade drive belt is worn loose or broken 1 Install new blade drive belt 2 Blade drive belt is off pulley 2 Install blade drive belt and check idler pulley and belt guides for correct position Uneven cutting height 1 Tire pressure is incorrect 1 Set tire pressure g g 2 Mower ...

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